Minimum number of visitors per visit: 5 persons.Minimum number of visitors per visit: 50 persons.Booking confirmation: 1 week before visit.Non-working days: Sundays, January 1st and 6th, February 28th, Easter week from Thursday to Sunday, May 1st, August 15th, third week of September, October 12nd, November 1st, December 24th, 25th y 31st.